Filtering apparatus.



in); 885,047. PATENTED PR. 21, 1908;

w. A. HENDRYX. I

FILTERING APPARATUS. APPLICATION IPILED make, 1906.

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Attjas rinrran era WILBUR ALSON HENDRYX, OF DENVER, COLdRAlDO', ASSIGNOR OF ONE-HALF TO CHARLES BUTTERS, OF BERI QELEY AND SAN FRANCISCO, CALIFORNIA.

- FILTERING APPARATUS.

Specification of Letters Patent.

Patented April 21, 1908.

Application filed August 9, 1906. Serial No, 329,811.

' To all 137mm it may concern:

extending to the exterior of the tank.

Be it known that I, WILBUR ALSON- HEN- DRYX, a citizen of the United States, residing at Denver, in the county of Denver and State of Colorado, have invented certain new and useful Improvements in Filtering Apparatus, of which the following is a specification. I The object of this invention is to provide a filter cell adapted for the treatment of mixtures of ore and solvent liquor, such as orepulp, for the separation therefrom of a clear metal-bearing solution in ,an expeditious manner.

The filter cell comprises. essentially an open frame, a filtering medium thereon, and a non-metallic pervious filling adapted to support said filtering medium while providing a free passage for filtered liquid. the cell is mounted in a suitable tank of any desired form, outlets from thecell or cells For a full understanding of the invention reference is made to the accompanying drawing, wherein Figure 1 is a central vertical section showing a plurality of cells in position in a tank, and Fig. 2 is a central vertical section on a. solrpewhat larger scale of a modified form of ce Referring to the figures, 1 re resents a tank which may be of any suitab e shape or dimensions, having a converging bottom 2, illustrated as conical. Within the tank and preferably just above the bottom 2 are arranged transverse timbers 3, carried by an angle iron 4 or otherwise held, and servingto support a plurality of filters or filter cells 5 shown as four in number. It will be under-- stood .that the number of cells in each tank may be increased as desired.

In the form shown in liig. 1 each of these cells comprises, a rectangular framework 6, conveniently of wood, the bottom member 7 being provided with. longitudinal recesses 8. Filter bags 9, of canvas or other material are drawn over the frames 6 and their lower open ends secured by cleats 10 engaging the recesses 8 above mentioned. Each filter-cell has a bottom discharge 11, the several cells being shown as connected to a-comrnon main 12 extending through the tank wall and terminating" in a cock 13.

In order to keep the walls of the cells distended under the weight of the material in the tank I prefer toprovide -in each cell a In use non-metallic pervious material capable of preventing the collapse or serious displacement of the filtering walls, while at the same to react with or dissolve in the solutions used under certain conditions, and also by reason of their tendency to corrode and to cause the decay of the filtering cloths or otherwise to weaken them; furthermore such fillings decrease the filtering capacity of the cloths by obstructing their interstices. One filling material which I have found suitable for this purpose is cocoa matting, which may be. 1

flexed as shown at 14 in Fig. to'form a filling, or it maybe otherwise disposed.

As a modified means for supporting theiilter walls I have shown in Fig. 2 a spacing strip 15, conveniently of wood, of which any required number maybe used, the several strips being cut away at the sides as shown to provide the maximum practicable filtering area. Or the cells may be filled or packed with strips, blocks or pieces of wood or other material which may be of irregular shape and v of ununiform size, the essential feature being the provision of a/filling which shall be capable' of supporting the Walls or preventing substantial displacement thereof while providing a free passa eway for the filtered liquid. The

tank 1 is aso provided with one or more cocks 16 disposed at'various levels and serving to draw off clear but unfiltered solution I as hereinafter described; and an outflow pipe 17 near the to A sludge gate 18 permits the quick disc large of the contents of the 4' tank.

The mode of operation of the apparatus will depend upon the character of t ematerial treated, and more particularly upon the comparative readiness with which the material maybe filtered or settled. For instance a pulp-carrying a certain quantity of liquid 'may-be run into the tank, and the valve/13 opened, permitting the outflow of the clear solution which has passed through the filters 9. When the pulp is of such nature that it settles leaving a substantially clear liquor,

one or more of the decanting cocks 16 is opened andsuch clear solution withdrawn. After the greater portion of the solution has been separated by filtration or decantation or both, Wash Water or barren solution is forced through the opening 13 and in reverse ating by gravity, it will be understood that suction ma r be ap lied to the outlet 13 should this e desira le.

While the apparatus is es for the treatment of ore-pu it is usefiil for the filtration and decantation of various liq uids from pulp or solids.

I claim:

l. A filter cell comprising an open frame, a filtering medium thereon, an outlet, and a non-metallic pervious filling adapted to suport said filtering medium While providin a ree passage for filtered liquid, substantially as described.

2. A filter cell comprising an open frame, a filtering medium thereon, an outlet, and a non-metallic pervious filling of woven or plaited fabric adapted to support said filterlng medium While providing a free passage for filtered liquid, substantially as described.

3. A. filter cell comprising an open frame, a filtering medium thereon, an outlet, and a pervious filling of cocoa matting adapted to support said filtering medium while providecially desi ned 1 ing a free passage for filtered liquid, substantially described.

4. in eombination, a tanlr and u filter cell therein, said filter cell comprising an 0 )en frame, a filtering medium thereon, an out et, and a non-metallic pervious filling adapted to support said filtering medium while providing a free passage for filtered liquid, sub stantially as described.

5. In combination, a tank and a filter cell therein, said filter cell comprising an 0 en frame, a filtering medium thereon, an out et, and a'nonunetallic pervious filling of woven or plaited fabric ndapted to support said fil tering medium while providing a free passage for filtered liquid, substantially as described.

6. in combination, a tank and a filter cell therein, said filter cell comprising an open frame, a filtering medium 'ihereon, an out et, and a pcrvious filling of cocoa matting e lapted to support said filtering medium while providing afree passage for filtered liquid, substantially as described.

Signed at the city and county of Denver, State of Colorado this 31st day of July 1906.

WllJiEUli AlrilfilN HEN DltYX. ltitnesses:

(lime. ll. Divine, 'Tnnonons. Vi nms. 

